Kimiko:
"Actually there is no mission ranking below D in any nation, Odayama-sensei. The universal mission ranking system was put place by a Five Kage summit late into the Second Kage Generation, after a series of miscommunications where a spy from one nation had a grading system that was completely in reverse to another nation and thus mistakenly reported a low-priority mission as a high priority one to their true superiors, and was interpreted as coded instructions for an attack on them, nearly setting off the Third Ninja War early. The Kages, not wanting to make bad moves due to confusing intelligence, all agreed to universalize the rankings."
she says matter of factly, having read and remembered the shinobi histories by heart.
"Yeah shes right."
"But wait whats that about survival-"
Yuyuyu tires of this and starts walking forward with a grin her face.
"Come on, we know the job lets get movin'."
Kimiko shrugs and follows after her.